Effect of the sugar-beet pulp water activity on the solid-state culture of Trichoderma viride TS |
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| Authors: | W. Grajek P. Gervais |
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| Affiliation: | (1) Laboratoire Associé à la Chaire de Biotechnologie, INA-PG, INRA, 17 rue Sully, F-21 034 Dijon, France;(2) Laboratoire de Biologie, Physico-chimique, ENS.BANA, Campus Universitaire Montmuzard, F-21 100 Dijon, France |
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| Abstract: | Summary The growth and the sporulation of Trichoderma viride TS in relation to water activity (a w) of sugar-beet pulp medium was studied. It was found that the maximum growth, monitored by protein production, substrate utilization and pH alteration, appeared at a w=0.990–0.992. Optimal water activity of the medium for sporogenesis was 0.980. It was observed that both physiological phenomena appeared in narrow ranges of water activity which caused the rigorous a w control in solid-state fermentation to be postulated. |
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